The ap_pregsub function in server/util.c in the Apache HTTP Server 2.0.x through 2.0.64 and 2.2.x through 2.2.21, when the mod_setenvif module is enabled, does not restrict the size of values of environment variables, which allows local users to cause a denial of service (memory consumption or NULL pointer dereference) via a .htaccess file with a crafted SetEnvIf directive, in conjunction with a crafted HTTP request header, related to (1) the "len +=" statement and (2) the apr_pcalloc function call, a different vulnerability than CVE-2011-3607.
総合評価: CVE-2011-4415 は公開エクスプロイトあり（50/100）。CVSS 深刻度は低。悪用される可能性が高い（EPSS 3.10%、86 パーセンタイル） 根拠: 公開エクスプロイトが 3 件参照されています（Exploit-DB）。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| 41769 | exploit_db | edb | 2011-11-02 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-23 | 3.28% | 3.10% | -0.18% |
| 2 | 2026-06-15 | 0.45% | 3.28% | +2.83% |
| 3 | 2026-03-04 | — | 0.45% | — |
EPSS の全履歴 （全 31 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 1.2 | 2.0 | LOW |
|
1.9 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2011-4415 unimportant priority: Debian including 1 source packages (apache2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2011-4415 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2011-4415 |
ubuntu
|
low | CVE-2011-4415 low priority: Ubuntu including 1 source packages (apache2), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): ignored 6. | https://ubuntu.com/security/CVE-2011-4415 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| apache | http_server | 2.0 | cpe:2.3:a:apache:http_server:2.0:*:*:*:*:*:*:* |
| apache | http_server | 2.0.9 | cpe:2.3:a:apache:http_server:2.0.9:*:*:*:*:*:*:* |
| apache | http_server | 2.0.28 | cpe:2.3:a:apache:http_server:2.0.28:*:*:*:*:*:*:* |
| apache | http_server | 2.0.28 | cpe:2.3:a:apache:http_server:2.0.28:beta:*:*:*:*:*:* |
| apache | http_server | 2.0.32 | cpe:2.3:a:apache:http_server:2.0.32:*:*:*:*:*:*:* |
| apache | http_server | 2.0.32 | cpe:2.3:a:apache:http_server:2.0.32:beta:*:*:*:*:*:* |
| apache | http_server | 2.0.34 | cpe:2.3:a:apache:http_server:2.0.34:beta:*:*:*:*:*:* |
| apache | http_server | 2.0.35 | cpe:2.3:a:apache:http_server:2.0.35:*:*:*:*:*:*:* |
| apache | http_server | 2.0.36 | cpe:2.3:a:apache:http_server:2.0.36:*:*:*:*:*:*:* |
| apache | http_server | 2.0.37 | cpe:2.3:a:apache:http_server:2.0.37:*:*:*:*:*:*:* |
| apache | http_server | 2.0.38 | cpe:2.3:a:apache:http_server:2.0.38:*:*:*:*:*:*:* |
| apache | http_server | 2.0.39 | cpe:2.3:a:apache:http_server:2.0.39:*:*:*:*:*:*:* |
| apache | http_server | 2.0.40 | cpe:2.3:a:apache:http_server:2.0.40:*:*:*:*:*:*:* |
| apache | http_server | 2.0.41 | cpe:2.3:a:apache:http_server:2.0.41:*:*:*:*:*:*:* |
| apache | http_server | 2.0.42 | cpe:2.3:a:apache:http_server:2.0.42:*:*:*:*:*:*:* |
| apache | http_server | 2.0.43 | cpe:2.3:a:apache:http_server:2.0.43:*:*:*:*:*:*:* |
| apache | http_server | 2.0.44 | cpe:2.3:a:apache:http_server:2.0.44:*:*:*:*:*:*:* |
| apache | http_server | 2.0.45 | cpe:2.3:a:apache:http_server:2.0.45:*:*:*:*:*:*:* |
| apache | http_server | 2.0.46 | cpe:2.3:a:apache:http_server:2.0.46:*:*:*:*:*:*:* |
| apache | http_server | 2.0.47 | cpe:2.3:a:apache:http_server:2.0.47:*:*:*:*:*:*:* |
| apache | http_server | 2.0.48 | cpe:2.3:a:apache:http_server:2.0.48:*:*:*:*:*:*:* |
| apache | http_server | 2.0.49 | cpe:2.3:a:apache:http_server:2.0.49:*:*:*:*:*:*:* |
| apache | http_server | 2.0.50 | cpe:2.3:a:apache:http_server:2.0.50:*:*:*:*:*:*:* |
| apache | http_server | 2.0.51 | cpe:2.3:a:apache:http_server:2.0.51:*:*:*:*:*:*:* |
| apache | http_server | 2.0.52 | cpe:2.3:a:apache:http_server:2.0.52:*:*:*:*:*:*:* |
| apache | http_server | 2.0.53 | cpe:2.3:a:apache:http_server:2.0.53:*:*:*:*:*:*:* |
| apache | http_server | 2.0.54 | cpe:2.3:a:apache:http_server:2.0.54:*:*:*:*:*:*:* |
| apache | http_server | 2.0.55 | cpe:2.3:a:apache:http_server:2.0.55:*:*:*:*:*:*:* |
| apache | http_server | 2.0.56 | cpe:2.3:a:apache:http_server:2.0.56:*:*:*:*:*:*:* |
| apache | http_server | 2.0.57 | cpe:2.3:a:apache:http_server:2.0.57:*:*:*:*:*:*:* |
| apache | http_server | 2.0.58 | cpe:2.3:a:apache:http_server:2.0.58:*:*:*:*:*:*:* |
| apache | http_server | 2.0.59 | cpe:2.3:a:apache:http_server:2.0.59:*:*:*:*:*:*:* |
| apache | http_server | 2.0.60 | cpe:2.3:a:apache:http_server:2.0.60:*:*:*:*:*:*:* |
| apache | http_server | 2.0.61 | cpe:2.3:a:apache:http_server:2.0.61:*:*:*:*:*:*:* |
| apache | http_server | 2.0.63 | cpe:2.3:a:apache:http_server:2.0.63:*:*:*:*:*:*:* |
| apache | http_server | 2.0.64 | cpe:2.3:a:apache:http_server:2.0.64:*:*:*:*:*:*:* |
| apache | http_server | 2.2.0 | cpe:2.3:a:apache:http_server:2.2.0:*:*:*:*:*:*:* |
| apache | http_server | 2.2.1 | cpe:2.3:a:apache:http_server:2.2.1:*:*:*:*:*:*:* |
| apache | http_server | 2.2.2 | cpe:2.3:a:apache:http_server:2.2.2:*:*:*:*:*:*:* |
| apache | http_server | 2.2.3 | cpe:2.3:a:apache:http_server:2.2.3:*:*:*:*:*:*:* |
| apache | http_server | 2.2.4 | cpe:2.3:a:apache:http_server:2.2.4:*:*:*:*:*:*:* |
| apache | http_server | 2.2.6 | cpe:2.3:a:apache:http_server:2.2.6:*:*:*:*:*:*:* |
| apache | http_server | 2.2.8 | cpe:2.3:a:apache:http_server:2.2.8:*:*:*:*:*:*:* |
| apache | http_server | 2.2.9 | cpe:2.3:a:apache:http_server:2.2.9:*:*:*:*:*:*:* |
| apache | http_server | 2.2.10 | cpe:2.3:a:apache:http_server:2.2.10:*:*:*:*:*:*:* |
| apache | http_server | 2.2.11 | cpe:2.3:a:apache:http_server:2.2.11:*:*:*:*:*:*:* |
| apache | http_server | 2.2.12 | cpe:2.3:a:apache:http_server:2.2.12:*:*:*:*:*:*:* |
| apache | http_server | 2.2.13 | cpe:2.3:a:apache:http_server:2.2.13:*:*:*:*:*:*:* |
| apache | http_server | 2.2.14 | cpe:2.3:a:apache:http_server:2.2.14:*:*:*:*:*:*:* |
| apache | http_server | 2.2.15 | cpe:2.3:a:apache:http_server:2.2.15:*:*:*:*:*:*:* |
| apache | http_server | 2.2.16 | cpe:2.3:a:apache:http_server:2.2.16:*:*:*:*:*:*:* |
| apache | http_server | 2.2.18 | cpe:2.3:a:apache:http_server:2.2.18:*:*:*:*:*:*:* |
| apache | http_server | 2.2.19 | cpe:2.3:a:apache:http_server:2.2.19:*:*:*:*:*:*:* |
| apache | http_server | 2.2.20 | cpe:2.3:a:apache:http_server:2.2.20:*:*:*:*:*:*:* |
| apache | http_server | 2.2.21 | cpe:2.3:a:apache:http_server:2.2.21:*:*:*:*:*:*:* |